Automatic lock for window sashes



Sept. 15, 1925. 1,553,712

7 w. w. MYERS AUTOMATIC LOOK FOR WINDOW SASHES Filed Sept. 25, 1922 I INVENTOR F/a bq A TI" )HIVE Y Patented Se t. 15, 1925. UNITED STATES PATENT OFFICE.

W. mums, OI BROOKLYN, NEW YORK, ASBIGNOR TO AUSTEAL WINDOWCOI- rm, 0] YORK, N. Y.,

A CORIORATION OF MAINE.

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Application fled September 28, 1922. Serial No. 590,011.

To all whom it may concern.

Be .'t known that I, Wm'rnaW Mamas, a citizen of the United States, residing at Brooklyn in the county of Kings and tate of New Fork, have invented certain new and useful Improvements. in Automatic Looks for Window Sashes, of which the following is a full, clear, and exact description.

The invention which constitutes the subject matter of this application relates to an automatic lock for window sashes. The device is particularly applicable to balanced windows of the austral type.

One of the chief difficulties encountered in a balanced window of the austral type is the proper shading of the sash and one of the more important features of my invention is to make it possible to draw the shade attached to the upper sash down far enough to form a contact with the lower rail thereof. Another important feature consists in combining with the keeper plate or strike, the shade cord pulley which is now manufactored as a separate part and separately located on said meeting rail.

Other objects, advantages and features of construction and operation will more fully appear from the detailed description below taken in connection with the accompanying drawings in which:

Figure 1 is a vertical crosssectional view of an austral window showing my invention applied thereto;

Figure 2 is an enlarged view of the meeting rails of the two sashes showing my improvement in cross section taken on the line 22 of Figure 3;

Figure 3 is a top plan view of the invention; and,

Figure 4 is a section taken on the line 4-4 of Figure 2; Y

Referring to the drawing in detail the reference numeral 10 designates a frame in which thetwo sashes 11 and 12 are mounted, the former being provided with sliding pivots at the top and the latter with slidingpivots at the bottom. These two sashes are pivotally connected to balance arms 13 (only one being illustrated) so that when one of said sashes is moved the other is simultaneously moved with it. The reference numeral 14 designates the meeting rail .of the lower sash and the reference numeral 15 the meeting rail of the upper sash. However, I make no claim per se to the various parts just referred to as they are all old and well known.

Upon the meeting rail 14 of the lower sash is secured the base member 16 of the fastening means. This member 16 isprovided with a horizontal perforation 17 in which the securing bolt 18 is located. The bolt 18 is equipped at its outer end with a pivoted camming or tightening member 19 and is connected at its inner end with an arm 20 extending at right angles thereto, which arm is provided with hooks 21 and 22 adapted to engage over the upwardly extending latching portions 23 and 24 of the keeper plate 25. The latter is connected to the top of the meeting rail 15 of the upper sash and will be described in more detail below. The bolt 18 is provided with a shoulder 26 and interposed between this shoulder and the inner end wall of the base member 16 is a spiral spring 27 which serves to maintain the bolt 18 in its extreme inward position whenever the camming member is in its normal position as indicated.

As previously stated the keeper plate 25 is provided with upwardly extending latching portions 23 and 24. The adjacent ends of these portions are separated from each other as indicated at 28, and preferably cast integral with the inner ends of these portions and the base of the keeper plate are laterally extending members 29 and 30 which serve as bearings for a shade cord pulley. 31. The inner edges 32 and 33 respectively are flush with the inner edge 34.- of the keeper plate, but inclined outwardly from bottom to top in consequence of which the lower end of the shade 35, when it has been pulled down by the cord 36. is enabled to contact with the lower meeting rail 15 of the upper sash, thus cutting off any light from passing between the lower end of the shalile and the said lower rail of the upper sas The base member 16 is provided with a counterbore 37 so as to permit a movement of the inner end of the bolt 18 in a vertical plane. The shoulder 26 of this bolt is preferably inclined inwardly from top to bottom and the wall of the base member against which the other end of the spring 27 abuts is inclined outwardly from top to bottom. This construction of the spring abutments very effectively serves to bias the inner end of the latch 18 downwardly and this causes the hooks 21 and 22 under the peculiar tension placed upon thesprmg 27, to snap behind the latching portions 23 and 24. In other words, the spring 27 not only tends to move the bolt 18 inwardly, but also tends to impart a downward movement to the inner end thereof. F 1 shows the improved fastening means 1n normal locked position with the sashes closed. When it is desired to open the sashes any suitable instrument is made to engage w1th the edge of the camming member 19 (or it may be engaged by the hand of the operator) and the latter pulled downwardly from the position indicated in Fig. 1 to the position indicated in Fig. 2, when the said member will engage with the extension 38 of the bolt 18. Simultaneously with this downward movement the bolt 18, under the power of the'spring 27, will be moved inwar ly to the full line position illustrated in Figure 2. If this movement of the camming member be continued, a corresponding movement will be imparted to the extension 38 and bolt 18, as indicated by the dotted lines in Figure 2, and thus cause the inner end of the bolt to move sufiiciently in a vertical direction to ermit the said bolt and the said keeper plate to be out of each others path so as to enable the sashes to be opened.

What I claim and desire to secure by I letters Patent is:

1. In an improved window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising upwardly extending hook engaging means, a shade cord pulley journaled to said keeper plate, and means on said keeper plate adapted to guide the lower end of the shade past the inner edge of the keeper plate into contact with the u per surface of said meeting rail.

2. fill an improved window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising a base plate, latch engaging means extendin upwardly from said base plate, a shade cord gulde, and means also extending upwardly from said base plate to which said guide is secured, the inner portion of said last mentioned means being located in a plane with the inner ed e of said base plate and adapted to guide t e lower end of the shade past the inner edge of the keeper plate into contact with the upper surface of said meeting rail.

3. In an improved window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising a base plate, separated latch engaging members integral w1th and extending upwardly from said base plate, journal members integral with the base plate and located between said latch engaging members, and a shade cord guide journaled between the second mentioned members, the inner edges of said journal members being located in a plane with the inner ed 0 of the base plate togui de the lower end of the shade past the inner edge of the keeper plate into contact with the upper surface of said meeting rail.

4. In an improved window latch, a keeper plate" adapted to be secured on the meeting rail of one sash comprising upwardly extending hook engaging means, a shadecord guide mounted upon said plate, and means on said keeper plate adapted to guide the lower end of a shade into contact with the upper surface of the meeting rail.

5. In an improved window latch, a keeper plate adapted to be secured on the meetin rail of one sash comprising a shade cord guide in combination with means for guiding the lower end of a shade past the back edge of the keeper Plate into contact with the up- I per surface 0 the meeting rail.

6. In an improved window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising a shade cord guide in combination with means for guidmg the lower end of a shade into contact with the upper surface of the meeting rail.

7. In an improved window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising upwardly extending latch engaging means, a shade cord pulley journaled to said keeper plate, and journal members for said pulley which, in conjunction with said pulley, serve to guide the lower end of the shade past the rear edge of the keeper plate into contact with the upper edge of the meetin rail.

8. In an improved window latch, a kee er plate adapted to be secured to the meeting rail of one sash, comprising a latch engagin means, a shade cord pulley journaled to said keeper plate, and journal members for said pulleys the rear edges of which are located substantially in a plane with the rear edge of said keeper plate and serve, in conjunction with said pulley, to guide the shade past the rear edge of the kee er plate into contact with the upper edge 0 the meeting rail.

9. In an improved window latch, a keeper plate adapted tov be secured to the meeting rail of one sash, comprising a latch engaging means integral therewith, a shade cord pulley journaled to said plate, and journal members for said pulley integral with said keeper plate, said journal members having means thereon in conjunction with said pulley for guiding the lower end of said shade past the rear edge of said keeper plate into contact with the upper edge of said meeting rail.

10. In an improved-window latch, a keeper plate adapted to be secured on the meeting rail of one sash comprising a base plate, latch en aging means extending upwardly from an being integral with said base plate, a shade cord guide, means also extending u wardly from and being integral with said base plate and with said latch en agin means to which said guide is secure sai means being arranged at right angles to said latch engaging means with the inner portion thereof located in a plane with the inner edge of said base plate whereby thevlower endof the shade is adapted to be guided past the inner edge of the keeper plate into contact with the upper surface of said meeting ral 11. In an improved window latch, akeeper plate adapted to be secured on the meeting rail of one sash comprising a base plate, separated latch engaging members integral with and extending upwardly from said base plate, journal members cast integral with said base plate and with the adjacent ends of said latch engaging members, said journal members being substantially arallel to each other and extending forwar ly at'right an gles to said latch engaging members, and a shade cord guide journaled between said forwardly extending journal members, the inner ed es of said journal members and the said corcl guide being located in a plane with the inner edge of said base plate to guide the lower end of the shade past the inner edge of the keeper-plate into contact with the upper surface of the meeting rail.

In testimony whereof, I have hereunto set In hand this 22 da of Se tember 1922.

y w mra it W. MYERS. 

